Pipette.



Patentedv Apr. I5, |902. E. MUMMENDEY.

PIPETTE.

ication led Mar. 17, 1902.)

Appl

Tm: Houma mins co., Puorauro. wnsnlyomu c.

(No Model.)

UNITED STATES PATENT OEEICE.

ERNST MUMMENDEY, OF BERGI-IEIM-ON-THE-ERFT, GER-MANY.

PIPETTE.

SPECIFICAVTION forming part of Letters Patent' No. 697,647, dated April15, 1902.

Application tiled March 17, 1902. Serial No. 98.708. (No model.)

T0 all whom it' may concern:

Be it known that I, ERNST MUMMENDEY, merchant, a subject of the King otPrussia and Emperor of Germany, residing at Bergheimon-the-Erft, in theKingdom of Prussia and Empire of Germany, have invented certain new anduseful Improvements in Appliances for Unobservedly Removing Liquors fromGlasses and the Like, of which the following is a specification.

This invention has reference to a pipette or appliance intended to beused by persons Who in the pursuit of their calling are requested orexpected to drink intoxicating liquors; and my invention has for itsobject and effect to provide an apparatus by which the liquor may berapidly removed from the glass or other receptacle without attractingattention ot others.

My invention is illustrated in the annexed drawings, in which- Figure 1shows a section of the whole device. Fig. 2 shows in section the closingappliance to an enlarged scale when shut, and Fig. 3 shows the same whenopen. Fig. 4 shows the container part of the device. Fig. 5 shows amodified construction of closing appliance when in the open position,and Fig. 6 same when shut.

As will be seen from the drawings, the appliance consists of alargecontainer a, which may be suitably made of india-rubber or other elasticor iiexible material. This container when the apparatus is in use iscarried concealed in an inner breast-pocket of the wearers coat.Connected with the container is a rubber tube b of suitable length,which at its upper end is provided with a nozzle c, and this nozzle,which has an aperture d, rst covered with a sheet-metal casing e,provided with an aperture f. In this construction (illustrated in Figs.2 and 3) the sheet-metal casing e is normally held by means of a springg in such a manner that the two apertures d and j do not coincide andthe appliance is therefore closed. When in use, the casing e and thenozzle c are so displaced in relation to each other that the apertures dand f coincide, (see Fig. 3,) so that there is a passage from theoutside to the container a.. As

shown in Figs. zand 3, the casing is displaced longitudinally inrelation to the nozzle e.

In the modification illustrated in Figs. 5 and 6 coincidence of theapertures d and f is obtained by the casing e. being displacedlaterally, and in this case also the spring g keeps the casing e in theshut position when the appliance is not in use. In all cases theapertures d and f are preferably as near as possible to the point of thedevice. For practical reasons the upper portion may be given the form ofa lead-pencil or the like.

In using the appliance a vacuum is -produced i'n the container ct bypressure on the same, the apertures cl and f being open to each otherand the external atmosphere. The aperture d is then closed by the casinge being moved about the nozzle c. If now the nozzle c is put into theliquor and opened in same, the liquor is forced or pipetted, by reasonof the external pressure, into the container a. and ct revert to theclosed position, and thus prevent discharge of the liquid.

What I claim, and desire to secure by Letters Patent, is-

1. A pipette, comprising a flexible container, having a tube terminatingin a rigid nozzle with an aperture through same; a casing also providedwith an aperture itting over said nozzle; and a spring, whereby saidapertures in nozzle and casing respectively, are held out of coincidencewhen the appliance is not being used; substantially as de*- scribed.

2. A pipette, comprising a flexible container a, tube b and nozzle c,having an aperture d; a casing e provided with aperture f, and a springfg, whereby said apertures d and fare held out of coincidence when theappliance is not in use, substantially as described.

In' witness whereof I subscribe my signa.- ture in presence of twoWitnesses.

ERNST MUMMENDEY.

Witnesses:

CARL SCHMITT, Jort. ScHoLz.

The nozzle is then released, and c

